Anticreeping rail-fastener.



W. F. ARMSTRONG. ANTIOREEPING RAIL PASTBNER.

APPLICATION FILED APR.5,1909. 986, 121

Patented Mar. 7, 1911.

UNITED STATES ANTIGREEIPING RAIL-FASTENER.

To all whom it may concern:

Be it known that I, WILLIAM F. Anms'ruonc,

'31- citizen of the United States of America, re-

' s ding and especially to those adapted to prevent the longit-ndinalmotion or creepin of the rail and has for its objects to provi e means which shall automatically prevent the rail from creeping in one direction by clamping it against such motion, without-throwing it .out of gage or otherwise straining 1t, and

i which shall be cheap to make and simple to apply. I attain these and other objects by the devices illustrated in the accompanying drawing in which, I

Figure 1 is an elevation of my improved anti-creeping device showing the rail to which it is applied in sect-ion; and Fig. 2 is a plan thereof showing the head of the rail broken away to reveal the clamp.v

Similar numerals of reference refer to similar parts throughout the several views.

This invention consists of a plate 1, in form similar to the usual tie-plate, fastened to the tie by means of the two spikes 2 which also. engage on each side ofthe base 3 of the rail. The cam-shaped clamp pieces 4 are pivotally secured to the plate 1 by means of the screws :3 which pass through the bosses '6 thereof and screw into the platel. The two clamp pieces 4: are similar but com plementary to each other in form and engage the "rail on both sides thereof. The bosses 6 of the clamp pieces 4: are semi-cylin drical and engage against the curved surfacesof the lugs 7 extending above the surface of the plate Lon which they are formed or secured. These lugs? take the strain of the clamp pieces 4 away from the ivot screws 5 to prevent injury to the said pivots The clamp pieces 4 are. formed with a series of teeth 8 formed on their outer curved surfaces, said curved surfaces being, eccentric from the pivots 5 as shown in Fig. 2. The clamping parts on which the teeth 8 are formed. are raised above the base 3 of the rail and are adapted to engage on both sides of the web 9 thereof. Springs .0 ngagethe sides o'fthe clamp pieces 4 and are accured by having their ends downturned into PATENT OFFICE.

WI LIAM r. anmsrnolvo, or svmmn, wasnmerou.

Specification ot-Letters Patent. Application flied April 5, 1909. Serial No; 488,008;

Patented-Man; *7, 19-11.

the holes 11 in the plate 1 and by engaging I the side of the pins 12 secured to the plate 1.

My improved device is applied to a rail by first slipping theplate 1 under the base of the rail and securin it in place on the tie by the spikes 2, in sue position that it is approximately symmetrical with the rail. Then the clamp pieces 4; are secured thereto by means of thescrew pivots 5 and are held against the 'web 9 by means of the springs 10 which are next put in lace. It is evident that as soon as the rent starts to creep in one'direction it will draw the clamp pieces 4-' with it and will be tightly clamped by them as they turn on their pivots 5; the greater the creeping, the tig iter the rail will be gripped and a ,polnt is quickly reached at which the rail cannot creep any farther and is held firmly in place. If a rail tends to creep in both directions the device may be turned in each alternate position so as to firmly hold it from creeping in either direction. In practice I propose to use one of these clamps on every third or fourth tie in places where the tendency to creep is'at all appreciable.

Having described my invention, what I claim is:

V 1. In an anti-creeping rail fastener, the combination of a tie plate securely fastened to the tie; cam-shaped cla1np piec es pivot-- ally secured to the tie plate and extending over the rail base and engaging on each side of the rail web; and spring pieces engaging said clamp pieces and holding them in position against said rail web.

2. In an anti-creeping rail fastener, the combination of a tie plate-securely fastened to the tie; cam-shaped clamp pieces pivotally secured to the tie plate and extending over the rail base and engaging on each side of the rail web; lugs formed on the tie plate and each engaging one ofsa-id clamp pieces to brace it on the tie plate; and spring pieces engaging said clamp pieces and mg them in position against saidrail web. 3. The combination with the red, of -a plate adaptedto underlie the rail, a bar piv-' oted to the plateon each side of the rail and adapted to enga e the side of the rail with 1ts freeend, s'ai bars being inclined with respcct to the rail and converging toward their free ends and engaging-the rail at approximately oppos" nits..-

4, The combination with ,t rail, ofii be o each side thereof,-'said bars each being in: Y

Q be ilizl pivoted at one end and engaging. the rail with the other end, said bars bin inclined toward'the rail, and diverging] their engaging ends.

-5. The combination with the 11111,, of means for preventing creeping threofgcomprising a pair of bars, the jbarsfbsing onopposite sides of the-mil, each bar having one end inclining outwardly away from the rail end engaging the rail and having the othei in gthe direction toward which the rail is WILLIAM ARMSTRONG.

Witnesses: J. M, GRO

L. R. CRIPPEN.

Copies of this patent may be obtained for five cents each, by addressing the. "Commissioner of Patents,

Washington, n. c. 

